Yes, shaded means without textures. Easiest thing to do would probably be put the default Lambert1 on everything and render it with some brighter lights. For Wire-On-Shaded, could use a playblast or apply your UV snapshot as a texture. An art test is an evaluation that the majority of studios give applicants to test them on a job-like project. Usually, this is something that is NOT in the game or whatever, but is something similar to what the artist would do on the job.